Alerts on PDF documents

An issue that came up this week is that some people (includingmyself)are receiving alerts for some PDF documents that had been modifiedquite a while ago (some cases around two months ago) and of coursehaven't been changed since then. This doesn't seem to happen withother file types, just PDF. Note: the index server had to berebootedabout 11 days ago - could that have something to do with it?

I actually have full updates running weekly on both indexes,Portal_Content and Non_Portal_Content, on the weekends. So sincethen, they've been updated twice each...FYI.

The alerts show the modified date as being from about two months agofor some of these files. Any clue why this kind of thing only seemsto be happening with PDFs? Some project team members thought it wasjust from opening and closing the files but that can't be it, sinceit never occurred before.

Update - I haven't solved this yet, but I've noticed a couplepatterns with this issue:

1) The bulk of these PDF file alerts have been occurring onTuesdays since the time I set up alerts for myself in these documentlibraries/areas...that's another thing, I am ruling out the rebootof the index/job server causing this to happen, since I never hadalerts set up on these document libraries and areas before thereboot, otherwise I might have seen old alerts pushed out to me if Ihad any assigned to me (this is just an assumption).

2) Most alerts appear about three or four at a time, all fordifferent documents.

This has been stumping me for a week and I haven't seen anyone elsein the SPS community with this issue...I'm sure everyone's had timeslike these where they feel as if they're unproductive ;) Again, anyhelp is appreciated, and thanks to Bryan for your response so far.

I think I fixed this particular issue for us...this happens to be apretty common bug, and it's apparently caused by v5.0 of the PDFIfilter.

I uninstalled v5.0 of the ifilter and then installed v6.0 on Friday,and so far I haven't received any bogus alerts yet. I may bespeaking a little soon but I haven't received any false alerts fornearly a week.

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